Carlos Eduardo Keosseián Lagomarsino (born 18 March 1988) is a Uruguayan former footballer who played as a midfielder.
In 2015âÂÂ16, Keosseián signed with Chilean club Magallanes.
On 9 January 2018, Atenas announced that Keosseián had signed a new contract with the club. The next year, he played for Tacuarembó.
In 2021, Keosseián played for .
Keosseián is of Armenian descent through his paternal grandparents. Carlos is the son of the football manager and former player Manuel Keosseián.